Question edited for clarity.
Question moved to maker category.
You can't as the phone doesn't have that feature. The only way would be if your landline provider had that feature. It works by dialing in an pressing buttons to start forwarding and then you enter the number you want the calls forwarded to. You can turn it off the same way.
Here is your manual
CS 5229 5229-2 5229-3 5229-4 5229-5
vtp-media.com
https://cdn-web.vtp-media.com > products > CS...
PDF
This manual has all the feature operations and troubleshooting necessary to install and operate your new VTech telephone. Please review this manual thoroughly ...
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